Young Chicago attorney and Sam Cayhall's grandson who travels to Mississippi to defend his dying grandfather. He investigates the original 1967 bombing, uncovers a political conspiracy, and serves as Sam's final legal representative and emotional confidant before the execution.
Lettner acts as a historical resource, guiding Adam through the original case's complexities.
They form a pragmatic partnership to bypass political barriers and access hidden evidence.
Adam is the grandson of the condemned killer, carrying the weight of family history and trauma.
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